JP7387468B2 - head mounted display - Google Patents

head mounted display Download PDF

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JP7387468B2
JP7387468B2 JP2020014022A JP2020014022A JP7387468B2 JP 7387468 B2 JP7387468 B2 JP 7387468B2 JP 2020014022 A JP2020014022 A JP 2020014022A JP 2020014022 A JP2020014022 A JP 2020014022A JP 7387468 B2 JP7387468 B2 JP 7387468B2
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head
mounted display
torque limiter
circumferential length
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JP2021121064A5 (en
JP2021121064A (en
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嵩 鳥居
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Canon Inc
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Canon Inc
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Priority to JP2020014022A priority Critical patent/JP7387468B2/en
Priority to US17/160,075 priority patent/US11624478B2/en
Publication of JP2021121064A publication Critical patent/JP2021121064A/en
Priority to US18/183,437 priority patent/US11920730B2/en
Publication of JP2021121064A5 publication Critical patent/JP2021121064A5/ja
Priority to JP2023194863A priority patent/JP2024019184A/en
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Publication of JP7387468B2 publication Critical patent/JP7387468B2/en
Priority to US18/424,518 priority patent/US20240167621A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/04—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or holding steady relative to, a person, e.g. by chains, e.g. rifle butt or pistol grip supports, supports attached to the chest or head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/041—Allowing quick release of the apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/163—Wearable computers, e.g. on a belt
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/02—Locking means
    • F16M2200/021—Locking means for rotational movement
    • F16M2200/022—Locking means for rotational movement by friction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/02—Locking means
    • F16M2200/025—Locking means for translational movement
    • F16M2200/027—Locking means for translational movement by friction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Description

本発明は、ユーザの頭部に装着する装着部を備え、前記ユーザに対して画像を表示するヘッドマウントディスプレイに関する。 The present invention relates to a head-mounted display that includes a mounting section that is mounted on a user's head and displays images to the user .

頭部に装着する頭部装着装置の一つに、ヘッドマウントディスプレイ（以後、ＨＭＤ（Head Mounted Display）と呼ぶ）がある。ＨＭＤは、仮想現実（ＶＲ：Virtual Reality）や拡張現実（ＡＲ：Augmented Reality）を体感するデバイスの一つとして利用される。
頭部装着装置は、頭部に装着するためのリング状の装着部を備えている。頭部装着装置を着脱しやすくし、また、多種多様な頭部形状に対応するために、装着部に周長可変機構を持たせることが求められている。 One type of head-mounted device that is worn on the head is a head-mounted display (hereinafter referred to as HMD (Head Mounted Display)). HMDs are used as one of the devices for experiencing virtual reality (VR) and augmented reality (AR).
The head-mounted device includes a ring-shaped mounting section for mounting on the head. In order to make it easier to attach and detach the head-mounted device and to accommodate a wide variety of head shapes, there is a need for the mounting portion to have a circumferential length variable mechanism.

特許第６５２９２８８号公報Patent No. 6529288 米国特許第１０２５１２８９号明細書US Patent No. 10251289

特許文献１には、装着部が外ベルト及び内ベルトを有し、内ベルトの一部が外ベルトの内部に挿入される構成が開示されている。内ベルトが外ベルトから抜ける方向へ動かないようにする抜け止め機構を備え、所定の操作により抜け止めを解除できるようになっている。
しかしながら、特許文献１では、頭部にＨＭＤを保持するための保持力を少し弱めるために、装着部の周長をわずかに拡大させるという微調を行うことができない。そのため、ユーザが使い勝手の悪さを感じるおそれがある。 Patent Document 1 discloses a configuration in which the mounting portion has an outer belt and an inner belt, and a part of the inner belt is inserted into the outer belt. It is equipped with a retaining mechanism that prevents the inner belt from moving in the direction of slipping off from the outer belt, and the retainer can be released by a predetermined operation.
However, in Patent Document 1, in order to slightly weaken the holding force for holding the HMD on the head, it is not possible to make fine adjustments such as slightly expanding the circumference of the mounting part. Therefore, the user may find it difficult to use.

特許文献２には、ラックアンドピニオンとラッチ機構を組み合わせた周長可変機構が開示されている。
しかしながら、特許文献２では、ダイアル操作でしか装着部の周長を拡大させることができず、最大周長にするには、ダイアルを回し続ける必要があった。そのため、ユーザが使い勝手の悪さを感じるおそれがある。 Patent Document 2 discloses a circumferential length variable mechanism that combines a rack and pinion and a latch mechanism.
However, in Patent Document 2, the circumference of the mounting portion can only be increased by operating a dial, and it is necessary to keep turning the dial to obtain the maximum circumference. Therefore, the user may find it difficult to use.

本発明は上記のような点に鑑みてなされたものであり、装着部の周長可変機構を使い勝手の良いものにすることを目的とする。 The present invention has been made in view of the above-mentioned points, and an object of the present invention is to make a circumferential length variable mechanism of a mounting portion easy to use.

本発明のヘッドマウントディスプレイは、ユーザの頭部に装着する装着部を備え、前記ユーザに対して画像を表示するヘッドマウントディスプレイであって、前記装着部は、複数のラックを有する第１のハウジングと、前記複数のラックのそれぞれと噛み合うピニオンと、第１の方向に発生させる保持力の上限よりも第２の方向に発生させる保持力の上限のほうが弱いトルクリミッタと、前記トルクリミッタを挿通し、前記ピニオンと一体回転するように前記ピニオンに連結するピニオンシャフトと、を有する第２のハウジングと、を備え、前記トルクリミッタは、前記ピニオンシャフトに対して前記保持力を発生させ、前記保持力の上限を下回る力が前記トルクリミッタに加えられた場合、前記ピニオン及び前記ピニオンシャフトが回転せずに前記装着部の周長が変化せず、前記保持力の上限を上回る力が前記トルクリミッタに加えられた場合、前記ピニオン及び前記ピニオンシャフトが回転して前記装着部の周長が変化し、前記第１の方向が周長拡大方向に対応し、前記第２の方向が周長縮小方向に対応する、ように配設されていることを特徴とする。 A head-mounted display of the present invention is a head-mounted display that includes a mounting section that is mounted on a user's head and displays an image to the user , wherein the mounting section includes a first rack that has a plurality of racks. a housing, a pinion that meshes with each of the plurality of racks, a torque limiter whose upper limit of holding force generated in a second direction is weaker than an upper limit of holding force generated in the first direction, and the torque limiter. a second housing having a pinion shaft inserted therethrough and connected to the pinion so as to rotate together with the pinion; the torque limiter generates the holding force with respect to the pinion shaft ; When a force below the upper limit of the holding force is applied to the torque limiter , the pinion and the pinion shaft do not rotate and the circumference of the mounting portion does not change , and a force exceeding the upper limit of the holding force applies to the torque limiter. When applied to a torque limiter , the pinion and the pinion shaft rotate to change the circumferential length of the mounting part, the first direction corresponds to a circumferential length increasing direction, and the second direction corresponds to a circumferential length increasing direction. It is characterized by being arranged so as to correspond to the direction of reduction .

本発明によれば、装着部の周長可変機構を使い勝手の良いものにすることができる。 According to the present invention, the circumferential length variable mechanism of the mounting portion can be made easy to use.

第１の実施形態に係るＨＭＤを示す斜視図である。FIG. 1 is a perspective view showing an HMD according to a first embodiment. 第１の実施形態に係るＨＭＤにおいて装着部に対して表示ユニットを動かした状態を示す図である。FIG. 3 is a diagram showing a state in which the display unit is moved relative to the mounting portion in the HMD according to the first embodiment. 第１の実施形態に係るＨＭＤの装着部を示す平面図である。FIG. 2 is a plan view showing the mounting section of the HMD according to the first embodiment. 第１の実施形態に係るＨＭＤの第１のハウジングを示す斜視図である。FIG. 2 is a perspective view showing a first housing of the HMD according to the first embodiment. 第１の実施形態に係るＨＭＤの第２のハウジングを示す分解斜視図である。It is an exploded perspective view showing the 2nd housing of HMD concerning a 1st embodiment. 第１の実施形態に係るＨＭＤの装着部の断面構成を示す図である。FIG. 3 is a diagram showing a cross-sectional configuration of a mounting portion of the HMD according to the first embodiment. 第２の実施形態に係るＨＭＤの装着部の断面構成を示す図である。It is a figure which shows the cross-sectional structure of the mounting part of HMD based on 2nd Embodiment. 第３の実施形態に係るＨＭＤの装着部を示す平面図である。It is a top view which shows the mounting part of HMD based on 3rd Embodiment. 第３の実施形態に係るＨＭＤのインナーとピニオンとの係合構成を示す模式図である。It is a schematic diagram which shows the engagement structure of the inner|inner of HMD and a pinion based on 3rd Embodiment.

以下、添付図面を参照して、本発明の好適な実施形態について説明する。
実施形態では、本発明を適用した頭部装着装置の例としてＨＭＤを説明する。
［第１の実施形態］
図１は、第１の実施形態に係るＨＭＤ１を示す斜視図である。ＨＭＤ１は、頭部に装着するためのリング状の装着部１００と、表示部である表示ユニット２００とを備える。なお、以下の説明において上下、左右、前後の方向は、ユーザがＨＭＤ１を装着した状態を基準とする方向をいう。 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
In the embodiment, an HMD will be described as an example of a head-mounted device to which the present invention is applied.
[First embodiment]
FIG. 1 is a perspective view showing an HMD 1 according to a first embodiment. The HMD 1 includes a ring-shaped mounting section 100 for mounting on the head, and a display unit 200 that is a display section. In addition, in the following description, up-down, left-right, and front-back directions refer to directions based on a state in which the user wears the HMD 1.

装着部１００は、そのフロント部分で表示ユニット２００を吊り下げるように支持する。装着部１００はケーブルガイド１０１Ｆ、１０１Ｂを備え、ケーブルガイド１０１Ｆ、１０１Ｂにより、表示ユニット２００に接続するケーブル２０１をユーザの後背側にガイドする。 The mounting section 100 supports the display unit 200 so as to hang it at its front portion. The mounting section 100 includes cable guides 101F and 101B, which guide the cable 201 connected to the display unit 200 toward the back of the user.

表示ユニット２００は、表示素子と、表示光学系とにより、表示素子の拡大虚像をユーザの眼に導光する。これにより、ユーザは現実世界と異なる画像を眼前で観察し、ＶＲを体感することができる。表示素子はＥＬパネルやＬＣＤ等が適用できるが、これらに限られない。
また、表示ユニット２００は、ユーザの眼前を撮像する複数のカメラ２０２を備えていてもよい。カメラ２０２の現実画像に対してＣＧ（Computer Graphics）等が重畳された画像を表示することで、ユーザは現実世界がＣＧ等で拡張された画像を観察し、ＡＲを体感することができる。撮像した現実画像にＣＧ等を重畳するのは、表示ユニット２００により実現される構成でも、ケーブル２０１を介して接続される不図示の外部装置により実現される構成でもよい。 The display unit 200 uses a display element and a display optical system to guide an enlarged virtual image of the display element to the user's eyes. This allows the user to observe an image different from the real world in front of their eyes and experience VR. The display element can be an EL panel, an LCD, or the like, but is not limited to these.
Furthermore, the display unit 200 may include a plurality of cameras 202 that capture images in front of the user's eyes. By displaying an image in which CG (Computer Graphics) etc. are superimposed on the real image of the camera 202, the user can observe an image in which the real world is augmented with CG etc. and experience AR. Superimposing CG or the like on the captured real image may be implemented by the display unit 200 or by an external device (not shown) connected via the cable 201.

装着部１００は、表示ユニット２００を上下にシフト可能に支持し、表示ユニット２００を上下にシフトさせるダイアル１０３を備える。また、装着部１００は、回動保持部１０２を介して、表示ユニット２００をチルト可能に支持する。図２に、装着部１００に対して表示ユニット２００を動かした状態を示す。図２（ａ）は、表示ユニット２００を上方にシフトさせた状態を示し、図２（ｂ）は、表示ユニット２００を下方にシフトさせた状態を示す。また、図２（ｃ）は、表示ユニット２００を上方向にチルトさせた状態を示す。このように、装着部１００に対して表示ユニット２００を可動にすることで、ＨＭＤ１の使い勝手を良くすることができる。 The mounting section 100 supports the display unit 200 so as to be able to shift up and down, and includes a dial 103 that shifts the display unit 200 up and down. Furthermore, the mounting section 100 tiltably supports the display unit 200 via the rotation holding section 102 . FIG. 2 shows a state in which the display unit 200 is moved relative to the mounting section 100. 2(a) shows a state in which the display unit 200 is shifted upward, and FIG. 2(b) shows a state in which the display unit 200 is shifted downward. Moreover, FIG. 2(c) shows a state in which the display unit 200 is tilted upward. In this way, by making the display unit 200 movable with respect to the mounting portion 100, the usability of the HMD 1 can be improved.

次に、装着部１００の構成について詳細に説明する。装着部１００は、以下に詳述するように、周長を拡大及び縮小させる周長可変機構を備える。
図３は、装着部１００を示す平面図である。矢印Ｄ1で示す方向を周長拡大方向と呼び、矢印Ｄ2で示す方向を周長縮小方向と呼ぶ。 Next, the configuration of the mounting section 100 will be explained in detail. The mounting portion 100 includes a circumferential length variable mechanism that expands and reduces the circumferential length, as will be described in detail below.
FIG. 3 is a plan view showing the mounting section 100. The direction indicated by the arrow D1 is called the circumferential length increasing direction, and the direction indicated by the arrow D2 is called the circumferential length reducing direction.

図３に示すように、装着部１００は、フロント部分及びサイド部分を構成する第１のハウジング１０４と、リア部分を構成する第２のハウジング１０５とを組み合わせることによりリング状に構成される。図４は、第１のハウジング１０４を示す斜視図である。また、図５は、第２のハウジング１０５を示す分解斜視図である。 As shown in FIG. 3, the mounting portion 100 is configured in a ring shape by combining a first housing 104 that constitutes a front portion and a side portion, and a second housing 105 that constitutes a rear portion. FIG. 4 is a perspective view showing the first housing 104. Further, FIG. 5 is an exploded perspective view showing the second housing 105.

第１のハウジング１０４のフロント部分の内周面に頭部接触部材１０６が設けられ、また、第２のハウジング１０５の内周面に頭部接触部材１０７が設けられる。頭部接触部材１０６、１０７は、スポンジ等の材質から構成される。また、頭部接触部材１０６、１０７は、頭部にＨＭＤ１を保持するための保持力を高めるために、摩擦係数の高い材質で覆われていてもよい。また、装着部１００のフロント部分やリア部分は高い剛性を有しており、装着部１００の周長が変化しても頭部にならわない。そのため、装着部１００は、頭部接触部材１０６、１０７以外の部位では、頭部を圧迫しない。これにより、ユーザが接触や圧迫により不快感を覚える部位を避けることができる。 A head contact member 106 is provided on the inner peripheral surface of the front portion of the first housing 104, and a head contact member 107 is provided on the inner peripheral surface of the second housing 105. The head contact members 106 and 107 are made of a material such as sponge. Further, the head contact members 106 and 107 may be covered with a material having a high coefficient of friction in order to increase the holding force for holding the HMD 1 on the head. Furthermore, the front and rear portions of the mounting section 100 have high rigidity, and do not conform to the head even if the circumference of the mounting section 100 changes. Therefore, the mounting part 100 does not press the head at parts other than the head contact members 106 and 107. This makes it possible to avoid areas where the user feels uncomfortable due to contact or pressure.

図４に示すように、第１のハウジング１０４は、樹脂等により湾曲する帯状に成形されており、両側で延伸するバンド部１０８Ｌ、１０８Ｒを有する。バンド部１０８Ｌ、１０８Ｒは可撓性を有し、バンド部１０８Ｌ、１０８Ｒにはラック１０８ａが構成されている。これらバンド部１０８Ｌ、１０８Ｒを第２のハウジング１０５の両側から内側に挿入して、ラック１０８ａを第２のハウジング１０５内に設けられたピニオン１１４を噛み合わせる。 As shown in FIG. 4, the first housing 104 is formed of resin or the like into a curved band shape, and has band parts 108L and 108R extending on both sides. The band parts 108L and 108R have flexibility, and a rack 108a is configured in the band parts 108L and 108R. These band parts 108L and 108R are inserted into the inside of the second housing 105 from both sides, and the rack 108a is engaged with the pinion 114 provided inside the second housing 105.

図５に示すように、第２のハウジング１０５は、内周面側を構成するインナー１０９と、外周面側を構成するアウター１１０とを備え、樹脂等により湾曲する帯状に成形されている。第２のハウジング１０５の両側には開口部１１１Ｌ、１１１Ｒが構成され、これら開口部１１１Ｌ、１１１Ｒに第１のハウジング１０４のバンド部１０８Ｌ、１０８Ｒをそれぞれ挿入することができる。 As shown in FIG. 5, the second housing 105 includes an inner 109 forming an inner peripheral surface and an outer 110 forming an outer peripheral surface, and is formed into a curved band shape of resin or the like. Openings 111L and 111R are formed on both sides of the second housing 105, and the band portions 108L and 108R of the first housing 104 can be inserted into these openings 111L and 111R, respectively.

また、インナー１０９とアウター１１０との内側には、左右一対のコロ１１２及びシャフト１１３と、ピニオン１１４と、トルクリミッタ１１５とが配設される。
コロ１１２及びシャフト１１３は、インナー１０９の両側に取り付けられ、開口部１１１Ｌ、１１１Ｒから挿入されるバンド部１０８Ｌ、１０８Ｒに対して転がり抵抗を生じさせる。
ピニオン１１４及びトルクリミッタ１１５は、第２のハウジング１０５の中央部において同軸上に配置される。ピニオン１１４は、開口部１１１Ｌ、１１１Ｒから挿入されるバンド部１０８Ｌ、１０８Ｒのラック１０８ａが噛み合う。本実施形態では、ピニオン１１４が本発明でいう係合部に相当する。 Further, inside the inner 109 and the outer 110, a pair of left and right rollers 112, a shaft 113, a pinion 114, and a torque limiter 115 are arranged.
The rollers 112 and the shaft 113 are attached to both sides of the inner 109 and create rolling resistance against the band parts 108L and 108R inserted through the openings 111L and 111R.
The pinion 114 and the torque limiter 115 are coaxially arranged in the center of the second housing 105. The pinion 114 is engaged with the racks 108a of the band parts 108L and 108R, which are inserted through the openings 111L and 111R. In this embodiment, the pinion 114 corresponds to the engaging portion in the present invention.

アウター１１０には、ダイアル型の操作部材１１６が設けられる。操作部材１１６に設けられたピニオンシャフト１１７が、トルクリミッタ１１５を挿通して、ピニオン１１４に一体回転するように連結する。ピニオン１１４とトルクリミッタ１１５との間においてピニオンシャフト１１７に抜け止め用のリング１１８が装着され、ピニオンシャフト１１７が軸方向に移動することを規制する。 A dial-shaped operating member 116 is provided on the outer 110. A pinion shaft 117 provided on the operating member 116 passes through the torque limiter 115 and is connected to the pinion 114 so as to rotate together. A retaining ring 118 is attached to the pinion shaft 117 between the pinion 114 and the torque limiter 115, and restricts movement of the pinion shaft 117 in the axial direction.

図６に、図３のVI－VI線の断面構成を示す。ピニオン１１４の上部にバンド部１０８Ｌのラック１０８ａが噛み合い、ピニオン１１４の下部にバンド部１０８Ｒのラック１０８ａが噛み合う。これにより、装着部１００は周長拡大及び周長縮小可能なリング状に構成される。例えば第１のハウジング１０４及び第２のハウジング１０５のうちのいずれか一方を手で押さえ、装着部１００の周長を拡大又は縮小させるように他方に力を加える操作（以下、操作Ａと呼ぶ）を行う。操作Ａを行うことにより、バンド部１０８Ｌ、１０８Ｒのラック１０８ａからピニオン１１４を回転させるトルクが発生して、装着部１００の周長が変化する。 FIG. 6 shows a cross-sectional configuration taken along line VI-VI in FIG. 3. The rack 108a of the band portion 108L meshes with the upper portion of the pinion 114, and the rack 108a of the band portion 108R meshes with the lower portion of the pinion 114. As a result, the mounting portion 100 is configured in a ring shape that can increase and decrease the circumference. For example, an operation in which one of the first housing 104 and the second housing 105 is held down by hand and force is applied to the other so as to expand or reduce the circumference of the mounting portion 100 (hereinafter referred to as operation A). I do. By performing operation A, torque is generated from the racks 108a of the band parts 108L and 108R to rotate the pinion 114, and the circumferential length of the mounting part 100 changes.

ここで、トルクリミッタ１１５は、ピニオンシャフト１１７に対して、静止摩擦力を利用した保持トルクを発生させており、最大静止摩擦力のときの保持トルクを上限として、装着部１００の周長の変化に対する保持力を発生させる。そして、最大静止摩擦力を上回る操作Ａにより、上述したようにバンド部１０８Ｌ、１０８Ｒのラック１０８ａからピニオン１１４を回転させるトルクが発生して、ピニオン１１４及びピニオンシャフト１１７が回転し、装着部１００の周長が変化する。操作Ａにより、装着部１００の周長の粗調及び微調が双方向（周長拡大方向Ｄ1及び周長縮小方向Ｄ2）に可能である。 Here, the torque limiter 115 generates a holding torque on the pinion shaft 117 using static friction force, and changes the circumference of the mounting portion 100 with the holding torque at the maximum static friction force as an upper limit. Generates a holding force against. Then, by operation A exceeding the maximum static friction force, as described above, a torque is generated to rotate the pinion 114 from the rack 108a of the band parts 108L and 108R, and the pinion 114 and pinion shaft 117 are rotated, and the mounting part 100 is rotated. The circumference changes. By operation A, coarse adjustment and fine adjustment of the circumference of the mounting portion 100 can be performed in both directions (in the direction of increasing the circumferential length D 1 and in the direction of decreasing the circumferential length D 2 ).

次に、ＨＭＤ１を着脱するときの動作を説明する。
ＨＭＤ１を頭部に装着するときは、操作Ａを行って装着部１００の周長を例えば最大周長まで拡大させ、装着部１００の中に頭部を入れる。そして、操作Ａを行って装着部１００の周長を頭部周長と略一致するまで縮小させる。頭部にＨＭＤ１を保持するための保持力を微調したい場合は、操作Ａを行って装着部１００の周長をわずかに拡大又は縮小させればよい。
ＨＭＤ１を取り外すときは、操作Ａを行って装着部１００の周長を拡大させる。なお、第１のハウジング１０４を両手で押さえつつ、後頭部で第２のハウジング１０５を押し拡げるという操作でも、装着部１００の周長を拡大させることができる。
このようにリリースボタン等の所定の操作が不要で、直感的な操作で装着部１００の周長を変化させることができる。 Next, the operation when attaching and detaching the HMD 1 will be explained.
When mounting the HMD 1 on the head, perform operation A to expand the circumference of the mounting section 100 to, for example, the maximum circumference, and insert the head into the mounting section 100. Then, operation A is performed to reduce the circumference of the mounting portion 100 until it substantially matches the circumference of the head. If you want to finely adjust the holding force for holding the HMD 1 on your head, you can perform operation A to slightly enlarge or reduce the circumference of the mounting section 100.
When removing the HMD 1, perform operation A to enlarge the circumference of the mounting section 100. Note that the circumferential length of the mounting portion 100 can also be increased by pressing the first housing 104 with both hands and pushing and expanding the second housing 105 with the back of the head.
In this way, there is no need for a predetermined operation of a release button or the like, and the circumference of the mounting portion 100 can be changed with an intuitive operation.

また、装着部１００は、ダイアル型の操作部材１１６を備える。トルクリミッタ１１５の保持トルクを上回るトルクで操作部材１１６を回転させると（以下、操作Ｂと呼ぶ）、ピニオン１１４が回転する。これにより、ピニオン１１４からバンド部１０８Ｌ、１０８Ｒを動かす力が発生することになり、装着部１００の周長がわずかに変化する。本実施形態では、操作部材１１６が時計回りに回転することで装着部１００の周長が縮小し、反時計回りに回転することで装着部１００の周長が拡大するように設定されている。このように、操作部材１１６を使用する操作Ｂにより、操作Ａよりも直感的に微調しやすくなる。 Furthermore, the mounting section 100 includes a dial-shaped operating member 116. When the operating member 116 is rotated with a torque exceeding the holding torque of the torque limiter 115 (hereinafter referred to as operation B), the pinion 114 rotates. As a result, a force is generated from the pinion 114 to move the band parts 108L and 108R, and the circumference of the mounting part 100 changes slightly. In this embodiment, the circumferential length of the mounting section 100 is set to decrease when the operating member 116 rotates clockwise, and the circumferential length of the mounting section 100 increases when the operating member 116 rotates counterclockwise. In this way, operation B using the operation member 116 makes it easier to make fine adjustments intuitively than operation A.

以上述べたように、トルクリミッタ１１５の保持トルクを上回る操作Ａ及び操作Ｂにより、直感的な操作で、装着部１００の周長の粗調及び微調が双方向（周長拡大方向Ｄ1及び周長縮小方向Ｄ2）に可能となる。 As described above, by operating A and B exceeding the holding torque of the torque limiter 115, coarse and fine adjustment of the circumference of the mounting portion 100 can be performed in both directions (in the circumferential length expansion direction D1 and in the circumferential length expanding direction D1 and This is possible in the length reduction direction D 2 ).

本実施形態では、トルクリミッタ１１５により、装着部１００の周長拡大方向Ｄ1及び周長縮小方向Ｄ2に対して保持力を発生させるようにしたが、頭部にＨＭＤ１を保持するようにするには、周長拡大方向Ｄ1に対して保持力を発生させて、周長の拡大を防ぐようにすればよい。したがって、トルクリミッタ１１５は周長縮小方向Ｄ2に対しては保持力を発生させないワンウェイ機能を備えるようにしてもよい。この場合、装着部１００の周長縮小方向Ｄ2の保持力が弱いので、着脱フローを簡便に行うことができる。
また、トルクリミッタ１１５は、保持トルクを可変にするものとしてもよい。 In this embodiment, the torque limiter 115 generates a holding force in the circumferential length increasing direction D1 and the circumferential length reducing direction D2 of the mounting part 100, but the HMD 1 is held on the head. In order to prevent the circumferential length from expanding, a holding force may be generated in the circumferential length increasing direction D1 . Therefore, the torque limiter 115 may have a one-way function that does not generate a holding force in the circumferential length reduction direction D2 . In this case, since the holding force of the mounting portion 100 in the circumferential length reduction direction D2 is weak, the mounting and dismounting flow can be performed easily.
Moreover, the torque limiter 115 may be one that makes the holding torque variable.

［第２の実施形態］
次に、図７を参照して、第２の実施形態を説明する。第１の実施形態では、本発明でいう周長保持手段としてトルクリミッタ１１５を利用したのに対して、第２の実施形態では、周長保持手段として摩擦板を利用する。以下では、第１の実施形態に係るＨＭＤ１と共通の構成要素に同じ符号を付し、その説明は省略する。 [Second embodiment]
Next, a second embodiment will be described with reference to FIG. In the first embodiment, the torque limiter 115 is used as the circumferential length holding means in the present invention, whereas in the second embodiment, a friction plate is used as the circumferential length holding means. Below, the same reference numerals are attached to the same components as the HMD 1 according to the first embodiment, and the explanation thereof will be omitted.

図７は、図６に対応する断面図である。図６との相違として、トルクリミッタ１１５ではなく、摩擦板１１９、１２０及びバネ１２１により、静止摩擦力を利用した保持トルクを発生させている。
摩擦板１１９は、バネ１２１の付勢力によってアウター１１０に押し当てられる。摩擦板１１９は、ピニオンシャフト１１７に対して回動可能であっても、回転方向に連結されていてもよい。また、摩擦板１２０は、バネ１２１の付勢力によってピニオン１１４に押し当てられている。摩擦板１２０は、ピニオンシャフト１１７に対して回動可能であっても、回転方向に連結されていてもよい。なお、摩擦板１１９、１２０の間においてピニオンシャフト１１７に抜け止め用のリング１１８が装着される。 FIG. 7 is a cross-sectional view corresponding to FIG. 6. The difference from FIG. 6 is that instead of the torque limiter 115, friction plates 119 and 120 and a spring 121 generate holding torque using static frictional force.
The friction plate 119 is pressed against the outer 110 by the urging force of the spring 121. The friction plate 119 may be rotatable relative to the pinion shaft 117 or may be connected in the rotation direction. Further, the friction plate 120 is pressed against the pinion 114 by the urging force of the spring 121. The friction plate 120 may be rotatable relative to the pinion shaft 117 or may be connected in the rotation direction. A retaining ring 118 is attached to the pinion shaft 117 between the friction plates 119 and 120.

このようにした第２の実施形態でも、第１の実施形態と同様、装着部１００の周長の変化に対する保持力を発生させることができる。
なお、摩擦板１１９、１２０がバネ１２１の付勢力によって押し当てられる相手部品は、インナー１０９でも、バンド部１０８Ｌ、１０８Ｒでもよく、装着部１００の周長の変化に対する保持力となる静止摩擦力が発生すればよい。また、摩擦板１１９、１２０は、ピニオンシャフト１１７と同軸上に配置される必要はない、装着部１００の周長の変化に対する保持力となる静止摩擦力が発生すればよい。 Also in the second embodiment, it is possible to generate a holding force against a change in the circumferential length of the mounting portion 100, as in the first embodiment.
The mating parts against which the friction plates 119 and 120 are pressed by the urging force of the spring 121 may be the inner 109 or the band parts 108L and 108R, and the static friction force that serves as a holding force against changes in the circumference of the mounting part 100 is It is enough if it occurs. Furthermore, the friction plates 119 and 120 do not need to be disposed coaxially with the pinion shaft 117 as long as they generate a static friction force that serves as a holding force against changes in the circumferential length of the mounting portion 100.

［第３の実施形態］
上述したように、頭部にＨＭＤ１を保持するためには、周長拡大方向Ｄ1に対して適当な保持力を発生させればよく、周長縮小方向Ｄ2に対する保持力は弱くてもよい。第３の実施形態として、周長縮小方向Ｄ2に対する保持力を周長拡大方向Ｄ1に対する保持力よりも弱くする構成例を説明する。以下では、第１の実施形態に係るＨＭＤ１と共通の構成要素に同じ符号を付し、その説明は省略する。 [Third embodiment]
As described above, in order to hold the HMD 1 on the head, it is sufficient to generate an appropriate holding force in the circumferential length increasing direction D1 , and the holding force in the circumferential length reducing direction D2 may be weak. . As a third embodiment, a configuration example will be described in which the holding force in the circumferential length reduction direction D2 is made weaker than the holding force in the circumferential length increasing direction D1 . Below, the same reference numerals are attached to the same components as the HMD 1 according to the first embodiment, and the explanation thereof will be omitted.

図８は、装着部１００を示す平面図である。装着部１００の左右の内側において、第１のハウジング１０４と第２のハウジング１０５との間に掛け渡すように弾性体１２２を取り付ける。弾性体１２２は、装着部１００の周長拡大方向Ｄ1に対して弾性力を作用させる。すなわち、周長拡大方向Ｄ1に対しては、トルクリミッタ１１５や摩擦板１１９、１２０及びバネ１２１による摩擦力に加えて、弾性体１２２の弾性力が保持力となる。これにより、周長縮小方向Ｄ2に対する保持力は、周長拡大方向Ｄ1に対する保持力よりも弱くなる。弾性体１２２は、例えばゴムやバネを用いればよい。
なお、弾性体の構成は図８に示すものに限られるものではなく、例えばインナー１０９とピニオン１１４との間に、回転方向の弾性体であるゼンマイを接続するようにしてもよい。 FIG. 8 is a plan view showing the mounting section 100. An elastic body 122 is attached so as to span between the first housing 104 and the second housing 105 on the left and right inner sides of the mounting part 100. The elastic body 122 applies an elastic force to the mounting portion 100 in the circumferential length expansion direction D 1 . That is, in addition to the frictional force of the torque limiter 115, the friction plates 119, 120, and the spring 121, the elastic force of the elastic body 122 serves as the holding force in the circumferential length expansion direction D1 . As a result, the holding force in the circumferential length reduction direction D2 becomes weaker than the holding force in the circumferential length increasing direction D1 . The elastic body 122 may be made of, for example, rubber or a spring.
Note that the configuration of the elastic body is not limited to that shown in FIG. 8; for example, a mainspring, which is an elastic body in the rotational direction, may be connected between the inner 109 and the pinion 114.

図９は、ピニオン１１４の回転軸方向から見た、インナー１０９とピニオン１１４との係合構造を示す模式図である。図９（ａ）は、装着部１００の周長縮小方向Ｄ2にピニオン１１４が回転する状態を示す。図９（ｂ）は、装着部１００の周長拡大方向Ｄ1にピニオン１１４が回転する状態を示す。ピニオン１１４には、その回転軸に対して径方向に突出する例えば複数の凸部１２４が設けられる。凸部１２４は、周長縮小方向Ｄ2で斜面角度θ1を有し、周長拡大方向Ｄ1で斜面角度θ2を有する（θ1＞θ2）。また、インナー１０９には、凸部１２４に対応する例えば複数の凸部１２３が設けられる。凸部１２３は、周長縮小方向Ｄ2で斜面角度θ2を有し、周長拡大方向Ｄ1で斜面角度θ1を有する。ピニオン１１４に設けられた不図示の弾性体により、凸部１２４の斜面が凸部１２３の斜面に当接する。図９（ａ）に示すように、装着部１００の周長縮小方向Ｄ2では、ピニオン１１４が斜面角度θ1を乗り越えるように回転する。それに対して、図９（ｂ）に示すように、装着部１００の周長拡大方向Ｄ1では、ピニオン１１４が斜面角度θ2を乗り越えるように回転する。θ1＞θ2であるので、周長縮小方向Ｄ2に対する保持力は、周長拡大方向Ｄ1に対する保持力よりも弱くなる。
なお、斜面角度が異なる形状は、必ずしもインナー１０９とピニオン１１４とが有する必要はなく、バンド部１０８Ｌ、１０８Ｒが有していてもよい。 FIG. 9 is a schematic diagram showing the engagement structure between the inner 109 and the pinion 114, viewed from the direction of the rotation axis of the pinion 114. FIG. 9(a) shows a state in which the pinion 114 rotates in the circumferential length reduction direction D2 of the mounting portion 100. FIG. 9(b) shows a state in which the pinion 114 rotates in the circumferential length expansion direction D1 of the mounting portion 100. The pinion 114 is provided with, for example, a plurality of convex portions 124 that protrude in the radial direction with respect to its rotation axis. The convex portion 124 has a slope angle θ 1 in the circumferential length reduction direction D 2 and a slope angle θ 2 in the circumferential length expansion direction D 1 (θ 1 >θ 2 ). Further, the inner 109 is provided with, for example, a plurality of protrusions 123 corresponding to the protrusions 124 . The convex portion 123 has a slope angle θ 2 in the circumferential length reduction direction D 2 and a slope angle θ 1 in the circumferential length expansion direction D 1 . Due to an elastic body (not shown) provided on the pinion 114, the slope of the convex portion 124 comes into contact with the slope of the convex portion 123. As shown in FIG. 9(a), in the circumferential length reduction direction D2 of the mounting portion 100, the pinion 114 rotates so as to overcome the slope angle θ1 . On the other hand, as shown in FIG. 9(b), in the circumferential length expansion direction D1 of the mounting portion 100, the pinion 114 rotates so as to overcome the slope angle θ2 . Since θ 1 >θ 2 , the holding force in the circumferential length reduction direction D 2 is weaker than the holding force in the circumferential length increasing direction D 1 .
Note that the inner 109 and the pinion 114 do not necessarily have to have different slope angles, but the band portions 108L and 108R may have the same shape.

周長縮小方向Ｄ2に対する保持力を周長拡大方向Ｄ1に対する保持力よりも弱くする構成例は、図８、図９に示したものに限られるものではない。例えば弾性体を用いるのではなく、部品形状によって、周長縮小方向Ｄ2に対する保持力を周長拡大方向Ｄ1に対する保持力よりも弱くする構成にしてもよい。 The configuration example in which the holding force in the circumferential length reduction direction D2 is made weaker than the holding force in the circumferential length increasing direction D1 is not limited to those shown in FIGS. 8 and 9. For example, instead of using an elastic body, the holding force in the circumferential length reduction direction D 2 may be made weaker than the holding force in the circumferential length increasing direction D 1 depending on the shape of the part.

以上、本発明を実施形態と共に説明したが、上記実施形態は本発明を実施するにあたっての具体化の例を示したものに過ぎず、これらによって本発明の技術的範囲が限定的に解釈されてはならないものである。すなわち、本発明はその技術思想、又はその主要な特徴から逸脱することなく、様々な形で実施することができる。 Although the present invention has been described above along with the embodiments, the above embodiments are merely examples of implementation of the present invention, and the technical scope of the present invention should not be construed as limited by these embodiments. This is something that should not happen. That is, the present invention can be implemented in various forms without departing from its technical idea or main features.

１：ヘッドマウントディスプレイ、１００：装着部、１０４：第１のハウジング、１０５：第２のハウジング、１０８Ｌ、１０８Ｒ：バンド部、１０８ａ：ラック、１１４：ピニオン、１１５：トルクリミッタ、１１６：操作部材、１１７：ピニオンシャフト、１１９、１２０：摩擦板、１２１：バネ 1: head mounted display, 100: attachment part, 104: first housing, 105: second housing, 108L, 108R: band part, 108a: rack, 114: pinion, 115: torque limiter, 116: operating member, 117: Pinion shaft, 119, 120: Friction plate, 121: Spring

Claims (7)

ユーザの頭部に装着する装着部を備え、前記ユーザに対して画像を表示するヘッドマウントディスプレイであって、
前記装着部は、
複数のラックを有する第１のハウジングと、
前記複数のラックのそれぞれと噛み合うピニオンと、第１の方向に発生させる保持力の上限よりも第２の方向に発生させる保持力の上限のほうが弱いトルクリミッタと、前記トルクリミッタを挿通し、前記ピニオンと一体回転するように前記ピニオンに連結するピニオンシャフトと、を有する第２のハウジングと、を備え、
前記トルクリミッタは、
前記ピニオンシャフトに対して前記保持力を発生させ、
前記保持力の上限を下回る力が前記トルクリミッタに加えられた場合、前記ピニオン及び前記ピニオンシャフトが回転せずに前記装着部の周長が変化せず、前記保持力の上限を上回る力が前記トルクリミッタに加えられた場合、前記ピニオン及び前記ピニオンシャフトが回転して前記装着部の周長が変化し、
前記第１の方向が周長拡大方向に対応し、前記第２の方向が周長縮小方向に対応する、ように配設されていることを特徴とするヘッドマウントディスプレイ。 A head-mounted display that includes an attachment part that is attached to a user's head and displays an image to the user ,
The mounting part is
a first housing having a plurality of racks ;
A pinion that meshes with each of the plurality of racks, a torque limiter whose upper limit of the holding force generated in the second direction is weaker than the upper limit of the holding force generated in the first direction , and the torque limiter is inserted; a second housing having a pinion shaft connected to the pinion so as to rotate together with the pinion;
The torque limiter is
generating the holding force on the pinion shaft;
When a force below the upper limit of the holding force is applied to the torque limiter , the pinion and the pinion shaft do not rotate and the circumference of the mounting portion does not change , and a force exceeding the upper limit of the holding force does not rotate. When applied to the torque limiter , the pinion and the pinion shaft rotate and the circumference of the mounting portion changes;
A head-mounted display characterized in that the first direction corresponds to a circumferential length increasing direction, and the second direction corresponds to a circumferential length reducing direction . 前記トルクリミッタは、前記第２の方向に保持力を発生させないことを特徴とする請求項１に記載のヘッドマウントディスプレイ。 The head mounted display according to claim 1 , wherein the torque limiter does not generate a holding force in the second direction . 前記ピニオンシャフトに連結する操作部材を備えることを特徴とする請求項１又は２に記載のヘッドマウントディスプレイ。 The head mounted display according to claim 1 or 2, further comprising an operating member connected to the pinion shaft. 前記トルクリミッタは、静止摩擦力を利用した保持トルクを発生し、最大静止摩擦力のときの保持トルクを上限とするように構成されていることを特徴とする請求項１乃至３のいずれか１項に記載のヘッドマウントディスプレイ。4. The torque limiter is configured to generate a holding torque using static frictional force, and to set the holding torque at the maximum static frictional force as an upper limit. Head-mounted display as described in section. 前記トルクリミッタは、ワンウェイ機能を持つことを特徴とする請求項１乃至４のいずれか１項に記載のヘッドマウントディスプレイ。The head mounted display according to any one of claims 1 to 4, wherein the torque limiter has a one-way function. 前記装着部は、
前記保持力の上限を上回る力を加える操作により周長が変化するように構成され、
前記操作は、
前記ピニオンシャフトに連結する操作部材を回転させる第１の操作と、
前記第１のハウジング及び前記第２のハウジングのうち一方を手で押さえ、他方に力を加える第２の操作と、を含み、
前記操作部材の非操作時、前記複数のラック及び前記ピニオン以外の部材の噛合によって前記操作部材はロックされていないことを特徴とする請求項１乃至５のいずれか１項に記載のヘッドマウントディスプレイ。 The mounting part is
The circumferential length is configured to change by applying a force exceeding the upper limit of the holding force,
The said operation is
a first operation of rotating an operating member connected to the pinion shaft ;
a second operation of holding one of the first housing and the second housing by hand and applying force to the other;
The head-mounted display according to any one of claims 1 to 5, wherein when the operating member is not operated, the operating member is not locked by engagement of a member other than the plurality of racks and the pinion. . 前記装着部は、ロックをリリースするための前記ピニオンの回転軸に沿った方向における前記ピニオンに対する前記操作部材の相対移動を伴わない、前記第１の操作及び前記第２の操作を行うことにより周長が変化するように構成されていることを特徴とする請求項６に記載のヘッドマウントディスプレイ。 The mounting portion is configured to rotate around the periphery by performing the first operation and the second operation without relative movement of the operating member with respect to the pinion in a direction along the rotation axis of the pinion for releasing the lock. The head-mounted display according to claim 6 , wherein the head-mounted display is configured to vary in length.
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